CN202475382U - Narrow pulse generation circuit - Google Patents
Narrow pulse generation circuit Download PDFInfo
- Publication number
- CN202475382U CN202475382U CN2012200555552U CN201220055555U CN202475382U CN 202475382 U CN202475382 U CN 202475382U CN 2012200555552 U CN2012200555552 U CN 2012200555552U CN 201220055555 U CN201220055555 U CN 201220055555U CN 202475382 U CN202475382 U CN 202475382U
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- circuit
- narrow pulse
- pulses
- pulse generation
- speed amplifier
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Abstract
The utility model relates to a pulse generation circuit, in particular to a narrow pulse generation circuit, specifically an ultra wideband narrow pulse circuit triggered to generate picosecond (PS)-level pulses. The technical scheme is that: the narrow pulse generation circuit comprises a high-speed amplifier, wherein the high-speed amplifier is used for receiving a triggering signal, and outputting a square wave signal; the output end of the high-speed amplifier is connected with a high-speed digital driving circuit, and is grounded through a microstrip delay line; and the high-speed digital driving circuit outputs required pulses. The frequency coverage of generated extremely narrow pulse signals is wide, and can reach 4GHz; the circuit can be continuously triggered to work and generate dense extremely narrow pulses; the circuit is flexibly used, and required waveforms can be generated according to a sequential logic to obtain the PS-level narrow pulses; and the circuit is simple in structure, high in reliability, moderate in output power, convenient to use and widely applicable to the fields of radar, communication, electronic countermeasures and the like.
Description
Technical field
The utility model relates to a kind of pulse-generating circuit, and especially a kind of burst pulse produces circuit, specifically the ultra wideband narrow-pulse circuit of triggering for generating ps (psec) level.
Background technology
At present, burst pulse generation circuit commonly used comprises Marx (Marx's circuit) circuit and pectination spectrum circuit.The Marx circuit mainly is made up of components and parts such as avalanche transistor, integrating capacitors.The parallel mode of setting out has simultaneously been adopted in this pulse; Through regulating the amplitude of respectively managing trigger impulse, eliminate single-tube circuit and triggered the snowslide time of delay that exists, make each transistor produce the avalanche multiplication effect simultaneously; Accelerate the process of capacitive load discharge, obtained very steep fast forward position pulse.It is very high that the amplitude of the output waveform of this pulse generator can reach, but each the triggering the necessary long at interval time can only be triggered several thousand times among the 1s usually; And the stability of signal output amplitude is not high.
Pectination spectrum circuit mainly is made up of components and parts such as step recovery diode, excitation inductance; Step recovery diode with abrupt change capacitance characteristic works in conducting and step two states under the driving voltage effect, and forms the spike that a kind of duration is very short, amplitude is very big in step moment.This pulse power spectrum is pectination and evenly distributes, and on tens times and even subfrequency up to a hundred, still has certain energy output.This circuit can produce the higher burst pulse of repetition rate, has only several millivolts usually but output amplitude is very low, is difficult to be applied.
Summary of the invention
The purpose of the utility model is to overcome the deficiency that exists in the prior art, provides a kind of burst pulse to produce circuit, and it is simple and compact for structure, and toggle rate is high, and power output is big, amplitude stabilization, dependable performance, wide accommodation.
The technical scheme that provides according to the utility model; Said burst pulse produces circuit; Comprise being used to the high speed amplifier that receives triggering signal and export square-wave signal, the output of said high speed amplifier links to each other with the high-speed figure drive circuit, and through little band delay line ground connection; By the required pulse of high-speed figure drive circuit output.
Said high speed amplifier is the signal amplifier of operating frequency in GHz or GBps level.The input of said high speed amplifier links to each other with the sequential logical circuit that is used to produce triggering signal.Said sequential logical circuit comprises single-chip microcomputer or FPGA.
The advantage of the utility model: the frequency coverage that produces the ultra-narrow pulse signal is higher, can reach 4GHz; Can be produced intensive ultra-narrow pulse thereby work by continuous trigger; Use flexibly, can produce needed waveform, obtain the burst pulse of ps level according to sequential logic; Constitute simply, reliability is high; Power output is moderate, and convenient the use can be widely used in fields such as radar, communication and electronic countermeasures.
Description of drawings
Fig. 1 is the existing pulse-generating circuit that adopts the Marx circuit.
Fig. 2 is the pulse-generating circuit of existing pectination spectrum.
Fig. 3 is the structured flowchart of the utility model.
Fig. 4 is the oscillogram of triggering signal.
Fig. 5 is the oscillogram of high speed amplifier output.
Fig. 6 is the oscillogram after little band delay line discharge.
Fig. 7 is the required narrow pulse waveform figure of the utility model output.
Fig. 8 is the user mode figure of the utility model.
Embodiment
Below in conjunction with concrete accompanying drawing and embodiment the utility model is described further.
Like Fig. 3, Fig. 4, Fig. 5, Fig. 6 and shown in Figure 7: in order to produce required narrow pulse signal fast and to improve the stability of output signal; Said burst pulse produces circuit and comprises and be used to the high speed amplifier that receives triggering signal and export square-wave signal; The output of said high speed amplifier links to each other with the high-speed figure drive circuit, and through little band delay line ground connection; By the required pulse of high-speed figure drive circuit output.In order to access required ps level burst pulse, the operating frequency of high speed amplifier should be at the signal amplifier of GHz or GBps level.Triggering signal is generally cosine and sine signal shown in Figure 4, and triggering signal becomes rising edge and precipitous square-wave signal thereof after amplifying through the high speed amplifier open loop, and is as shown in Figure 5.The square-wave signal of high speed amplifier output produces the extremely narrow pulse of a less width of amplitude after discharging over the ground through little band delay line, and is as shown in Figure 6; After the shaping of said pulse process high-speed figure driving circuit drives, can obtain required pulse, as shown in Figure 7.
The pulse duration that the delay length of little band delay line is exported is as required carried out matching Design, and the size of output amplitude confirms to choose the kind of high-speed figure drive circuit; As the high-speed figure drive circuit of selecting ECL (Emitter Coupled Logic, emitter-coupled logic) level can obtain to surpass the output amplitude of 800mV; As the high-speed figure drive circuit intelligence of selecting CML (CML) level obtains the output amplitude of 400mV.Particularly, the high-speed figure drive circuit is conventional drive circuit, can select the NB7L11MN type ECL driver of ON.
As shown in Figure 8: in order can when working, rapid Continuous to trigger, can the input of high speed amplifier be linked to each other with sequential logical circuit, sequential logical circuit produces required triggering signal.Particularly, sequential logical circuit comprises single-chip microcomputer or FPGA (Field-Programmable Gate Array), produces required triggering signal through single-chip microcomputer or FPGA.During work, after high speed amplifier receives triggering signal, high speed amplifier output square-wave signal, square-wave signal discharges and the required narrow pulse signal of output after the high-speed figure driving circuit drives through little band delay line over the ground.
The frequency coverage of the utility model generation ultra-narrow pulse signal is higher, can reach 4GHz; Can be produced intensive ultra-narrow pulse thereby work by continuous trigger; Use flexibly, can produce needed waveform, obtain the burst pulse of ps level according to sequential logic; Constitute simply, reliability is high; Power output is moderate, and convenient the use can be widely used in fields such as radar, communication and electronic countermeasures.
Claims (4)
1. a burst pulse produces circuit, it is characterized in that: comprise being used to the high speed amplifier that receives triggering signal and export square-wave signal, the output of said high speed amplifier links to each other with the high-speed figure drive circuit, and passes through little band delay line ground connection; By the required pulse of high-speed figure drive circuit output.
2. burst pulse according to claim 1 produces circuit, and it is characterized in that: said high speed amplifier is the signal amplifier of operating frequency in GHz or GBps level.
3. burst pulse according to claim 1 produces circuit, it is characterized in that: the input of said high speed amplifier links to each other with the sequential logical circuit that is used to produce triggering signal.
4. burst pulse according to claim 3 produces circuit, and it is characterized in that: said sequential logical circuit comprises single-chip microcomputer or FPGA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200555552U CN202475382U (en) | 2012-02-20 | 2012-02-20 | Narrow pulse generation circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200555552U CN202475382U (en) | 2012-02-20 | 2012-02-20 | Narrow pulse generation circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202475382U true CN202475382U (en) | 2012-10-03 |
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ID=46923504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200555552U Expired - Lifetime CN202475382U (en) | 2012-02-20 | 2012-02-20 | Narrow pulse generation circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202475382U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102594303A (en) * | 2012-02-20 | 2012-07-18 | 北方通用电子集团有限公司 | Narrow-pulse generation circuit |
| CN107356937A (en) * | 2017-08-25 | 2017-11-17 | 长春德信光电技术有限公司 | A kind of walking robot collision warning device based on Laser Detection Technique |
-
2012
- 2012-02-20 CN CN2012200555552U patent/CN202475382U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102594303A (en) * | 2012-02-20 | 2012-07-18 | 北方通用电子集团有限公司 | Narrow-pulse generation circuit |
| CN107356937A (en) * | 2017-08-25 | 2017-11-17 | 长春德信光电技术有限公司 | A kind of walking robot collision warning device based on Laser Detection Technique |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121003 |
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| CX01 | Expiry of patent term |